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ptod.js
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ptod.js
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const lpparser = require('./lpparser');
const fs= require('fs');
module.exports = function ptod(filenameInput){
var parsedProblem = lpparser(filenameInput);
var MinMaxInverted = convertProblemType(parsedProblem[4]);
var ATranspose = convertRestrictionsToVariables(parsedProblem[0]);
var c = normalizeConvertedProblem(parsedProblem[1],parsedProblem[2],parsedProblem[0])[0];
var b = normalizeConvertedProblem(parsedProblem[1],parsedProblem[2],parsedProblem[0])[1];
var convertedProblem = printConvertedProblem(ATranspose,b,c,parsedProblem[3],MinMaxInverted);
fs.writeFileSync('./output.txt', convertedProblem);
}
function convertProblemType(MinMax){
return MinMax[0] == 1?[-1]:[1];
}
function convertRestrictionsToVariables(A){
var sizes = A.map(el => el.length);
var maxSize = Math.max(...sizes);
var ATranspose = [];
for(var i=0;i<A.length;i++){
ATranspose.push([]);
}
for(var i=0;i<A.length;i++){
for(var j=0;j<A.length;j++){
ATranspose[i].push(A[j][i]);
}
}
for(var i=0;i<ATranspose.length;i++){
if(ATranspose[i].length < maxSize){
while(ATranspose[i].length < maxSize){
ATranspose[i].push(0);
}
}
}
return ATranspose;
}
function normalizeConvertedProblem(b,c,A){
var sizes = A.map(el => el.length);
var maxSize = Math.max(...sizes);
if(c.length < maxSize){
while(c.length<=A.length){
c.push(0);
}
}
for(var i=0;i<b.length;i++){
b[i] = Number(b[i]);
}
return [b,c];
}
function printConvertedProblem(ATranspose,c,b,Eqin,MinMaxInverted){
var content =
"Min or Max:" +'\n' +
MinMaxInverted + '\n' + '\n' +
"C table:" + '\n' +
JSON.stringify(b) + '\n' + '\n' +
"A table:" + '\n' +
JSON.stringify(ATranspose) + '\n' + '\n' +
"Inequalities operators (eqin table):" + '\n' +
JSON.stringify(Eqin) +'\n' + '\n' +
"B table:" + '\n' +
JSON.stringify(c);
return content;
}